Dann, Charlotte & Dom and Angela & Lorraine (S03E05)

The episode kicks off with 23-year-old council worker Dann from Nottingham, who replaces his toilet seat monthly and gives his cats flea baths regularly. He lends a hand to Charlotte and Dom from Portsmouth, who have let their flat go for a whole year without cleaning. Next is Angela, also from Nottingham, who uses up three bottles of bleach each week. She partners with Lorraine from Scarborough, whose kitchen hasn't seen a scrub in two years. Lastly, Alison, who has OCD, challenges Helen to see who can achieve the cleanest kitchen cupboards.